<template>
  <div class="app-container">
    <el-card class="filter-container" shadow="never">
      <div>
        <i class="el-icon-search"></i>
        <span>筛选搜索</span>
        <el-button
          style="float:right"
          type="primary"
          @click="handleSearchList()"
          size="small">
          查询搜索
        </el-button>
        <el-button
          style="float:right;margin-right: 15px"
          @click="handleResetSearch()"
          size="small">
          重置
        </el-button>
      </div>
      <div style="margin-top: 15px">
        <el-form :inline="true" :model="listQuery" size="small" label-width="140px">
          <el-form-item label="专题名称：">
            <el-input v-model="listQuery.subjectName" class="input-width" placeholder="专题名称"></el-input>
          </el-form-item>
          <el-form-item label="推荐状态：">
            <el-select v-model="listQuery.recommendStatus" placeholder="全部" clearable class="input-width">
              <el-option
                v-for="item in recommendOptions"
                :key="item.value"
                :label="item.label"
                :value="item.value">
              </el-option>
            </el-select>
          </el-form-item>
        </el-form>
      </div>
    </el-card>
    <el-card class="operate-container" shadow="never">
      <i class="el-icon-tickets"></i>
      <span>数据列表</span>
      <el-button size="mini" class="btn-add" @click="handleSelectSubject()">选择专题</el-button>
    </el-card>
    <div class="table-container">
      <el-table
        ref="newSubjectTable"
        :data="list"
        style="width: 100%;"
        @selection-change="handleSelectionChange"
        v-loading="listLoading"
        border>
        <el-table-column type="selection" width="60" align="center"></el-table-column>
        <el-table-column label="编号" width="120" align="center">
          <template slot-scope="scope">{{ scope.row.id }}</template>
        </el-table-column>
        <el-table-column label="专题名称" align="center">
          <template slot-scope="scope">{{ scope.row.subjectName }}</template>
        </el-table-column>
        <el-table-column label="是否推荐" width="200" align="center">
          <template slot-scope="scope">
            <el-switch
              @change="handleRecommendStatusStatusChange(scope.$index, scope.row)"
              :active-value="1"
              :inactive-value="0"
              v-model="scope.row.recommendStatus">
            </el-switch>
          </template>
        </el-table-column>
        <el-table-column label="排序" width="160" align="center">
          <template slot-scope="scope">{{ scope.row.sort }}</template>
        </el-table-column>
        <el-table-column label="状态" width="160" align="center">
          <template slot-scope="scope">{{ scope.row.recommendStatus | formatRecommendStatus }}</template>
        </el-table-column>
        <el-table-column label="操作" width="180" align="center">
          <template slot-scope="scope">
            <el-button
              size="mini"
              type="text"
              @click="handleEditSort(scope.$index, scope.row)">设置排序
            </el-button>
            <el-button
              size="mini"
              type="text"
              @click="handleDelete(scope.$index, scope.row)">删除
            </el-button>
          </template>
        </el-table-column>
      </el-table>
    </div>
    <div class="batch-operate-container">
      <el-select
        size="small"
        v-model="operateType"
        placeholder="批量操作">
        <el-option
          v-for="item in operates"
          :key="item.value"
          :label="item.label"
          :value="item.value">
        </el-option>
      </el-select>
      <el-button
        style="margin-left: 20px"
        class="search-button"
        @click="handleBatchOperate()"
        type="primary"
        size="small">
        确定
      </el-button>
    </div>
    <div class="pagination-container">
      <el-pagination
        background
        @size-change="handleSizeChange"
        @current-change="handleCurrentChange"
        layout="total, sizes,prev, pager, next,jumper"
        :page-size="listQuery.pageSize"
        :page-sizes="[5,10,15]"
        :current-page.sync="listQuery.pageNum"
        :total="total">
      </el-pagination>
    </div>
    <el-dialog title="选择专题" :visible.sync="selectDialogVisible" width="50%">
      <el-input
        v-model="dialogData.listQuery.keyword"
        style="width: 250px;margin-bottom: 20px"
        size="small"
        placeholder="专题名称搜索">
        <el-button slot="append" icon="el-icon-search" @click="handleSelectSearch()"></el-button>
      </el-input>
      <el-table
        :data="dialogData.list"
        @selection-change="handleDialogSelectionChange"
        border>
        <el-table-column type="selection" width="60" align="center"></el-table-column>
        <el-table-column label="专题名称" align="center">
          <template slot-scope="scope">{{ scope.row.title }}</template>
        </el-table-column>
        <el-table-column label="所属分类" width="160" align="center">
          <template slot-scope="scope">{{ scope.row.categoryName }}</template>
        </el-table-column>
        <el-table-column label="添加时间" width="160" align="center">
          <template slot-scope="scope">{{ scope.row.createTime | formatTime }}</template>
        </el-table-column>
      </el-table>
      <div class="pagination-container">
        <el-pagination
          background
          @size-change="handleDialogSizeChange"
          @current-change="handleDialogCurrentChange"
          layout="prev, pager, next"
          :current-page.sync="dialogData.listQuery.pageNum"
          :page-size="dialogData.listQuery.pageSize"
          :page-sizes="[5,10,15]"
          :total="dialogData.total">
        </el-pagination>
      </div>
      <div style="clear: both;"></div>
      <div slot="footer">
        <el-button size="small" @click="selectDialogVisible = false">取 消</el-button>
        <el-button size="small" type="primary" @click="handleSelectDialogConfirm()">确 定</el-button>
      </div>
    </el-dialog>
    <el-dialog
      title="设置排序"
      :visible.sync="sortDialogVisible"
      width="40%">
      <el-form
        :model="sortDialogData"
        label-width="150px">
        <el-form-item label="排序：">
          <el-input v-model="sortDialogData.sort" style="width: 200px"></el-input>
        </el-form-item>
      </el-form>
      <span slot="footer">
        <el-button @click="sortDialogVisible = false" size="small">取 消</el-button>
        <el-button type="primary" @click="handleUpdateSort" size="small">确 定</el-button>
      </span>
    </el-dialog>
  </div>
</template>
<script>
import { fetchList, updateRecommendStatus, deleteHomeSubject, createHomeSubject, updateHomeSubjectSort } from '@/api/homeSubject'
import { fetchList as fetchSubjectList } from '@/api/subject'
import { formatDate } from '@/utils/date'

const defaultListQuery = {
  pageNum: 1,
  pageSize: 5,
  subjectName: null,
  recommendStatus: null
}
const defaultRecommendOptions = [
  {
    label: '未推荐',
    value: 0
  },
  {
    label: '推荐中',
    value: 1
  }
]
export default {
  name: 'HomeSubjectList',
  data () {
    return {
      listQuery: Object.assign({}, defaultListQuery),
      recommendOptions: Object.assign({}, defaultRecommendOptions),
      list: null,
      total: null,
      listLoading: false,
      multipleSelection: [],
      operates: [
        {
          label: '设为推荐',
          value: 0
        },
        {
          label: '取消推荐',
          value: 1
        },
        {
          label: '删除',
          value: 2
        }
      ],
      operateType: null,
      selectDialogVisible: false,
      dialogData: {
        list: null,
        total: null,
        multipleSelection: [],
        listQuery: {
          keyword: null,
          pageNum: 1,
          pageSize: 5
        }
      },
      sortDialogVisible: false,
      sortDialogData: { sort: 0, id: null }
    }
  },
  created () {
    this.getList()
  },
  filters: {
    formatRecommendStatus (status) {
      if (status === 1) {
        return '推荐中'
      } else {
        return '未推荐'
      }
    },
    formatTime (time) {
      if (time == null || time === '') {
        return 'N/A'
      }
      const date = new Date(time)
      return formatDate(date, 'yyyy-MM-dd hh:mm:ss')
    }
  },
  methods: {
    handleResetSearch () {
      this.listQuery = Object.assign({}, defaultListQuery)
    },
    handleSearchList () {
      this.listQuery.pageNum = 1
      this.getList()
    },
    handleSelectionChange (val) {
      this.multipleSelection = val
    },
    handleSizeChange (val) {
      this.listQuery.pageNum = 1
      this.listQuery.pageSize = val
      this.getList()
    },
    handleCurrentChange (val) {
      this.listQuery.pageNum = val
      this.getList()
    },
    handleRecommendStatusStatusChange (index, row) {
      this.updateRecommendStatusStatus(row.id, row.recommendStatus)
    },
    handleDelete (index, row) {
      this.deleteSubject(row.id)
    },
    handleBatchOperate () {
      if (this.multipleSelection < 1) {
        this.$message({
          message: '请选择一条记录',
          type: 'warning',
          duration: 1000
        })
        return
      }
      const ids = []
      for (let i = 0; i < this.multipleSelection.length; i++) {
        ids.push(this.multipleSelection[i].id)
      }
      if (this.operateType === 0) {
        // 设为推荐
        this.updateRecommendStatusStatus(ids, 1)
      } else if (this.operateType === 1) {
        // 取消推荐
        this.updateRecommendStatusStatus(ids, 0)
      } else if (this.operateType === 2) {
        // 删除
        this.deleteSubject(ids)
      } else {
        this.$message({
          message: '请选择批量操作类型',
          type: 'warning',
          duration: 1000
        })
      }
    },
    handleSelectSubject () {
      this.selectDialogVisible = true
      this.dialogData.listQuery.keyword = null
      this.getDialogList()
    },
    handleSelectSearch () {
      this.getDialogList()
    },
    handleDialogSizeChange (val) {
      this.dialogData.listQuery.pageNum = 1
      this.dialogData.listQuery.pageSize = val
      this.getDialogList()
    },
    handleDialogCurrentChange (val) {
      this.dialogData.listQuery.pageNum = val
      this.getDialogList()
    },
    handleDialogSelectionChange (val) {
      this.dialogData.multipleSelection = val
    },
    handleSelectDialogConfirm () {
      if (this.dialogData.multipleSelection < 1) {
        this.$message({
          message: '请选择一条记录',
          type: 'warning',
          duration: 1000
        })
        return
      }
      const selectSubjects = []
      for (let i = 0; i < this.dialogData.multipleSelection.length; i++) {
        selectSubjects.push({
          subjectId: this.dialogData.multipleSelection[i].id,
          subjectName: this.dialogData.multipleSelection[i].title
        })
      }
      this.$confirm('使用要进行添加操作?', '提示', {
        confirmButtonText: '确定',
        cancelButtonText: '取消',
        type: 'warning'
      }).then(() => {
        createHomeSubject(selectSubjects).then(response => {
          this.selectDialogVisible = false
          this.dialogData.multipleSelection = []
          this.getList()
          this.$message({
            type: 'success',
            message: '添加成功!'
          })
        })
      })
    },
    handleEditSort (index, row) {
      this.sortDialogVisible = true
      this.sortDialogData.sort = row.sort
      this.sortDialogData.id = row.id
    },
    handleUpdateSort () {
      this.$confirm('是否要修改排序?', '提示', {
        confirmButtonText: '确定',
        cancelButtonText: '取消',
        type: 'warning'
      }).then(() => {
        updateHomeSubjectSort(this.sortDialogData).then(response => {
          this.sortDialogVisible = false
          this.getList()
          this.$message({
            type: 'success',
            message: '删除成功!'
          })
        })
      })
    },
    getList () {
      this.listLoading = true
      fetchList(this.listQuery).then(response => {
        this.listLoading = false
        this.list = response.data.list
        this.total = response.data.total
      })
    },
    updateRecommendStatusStatus (ids, status) {
      this.$confirm('是否要修改推荐状态?', '提示', {
        confirmButtonText: '确定',
        cancelButtonText: '取消',
        type: 'warning'
      }).then(() => {
        const params = new URLSearchParams()
        params.append('ids', ids)
        params.append('recommendStatus', status)
        updateRecommendStatus(params).then(response => {
          this.getList()
          this.$message({
            type: 'success',
            message: '修改成功!'
          })
        })
      }).catch(() => {
        this.$message({
          type: 'success',
          message: '已取消操作!'
        })
        this.getList()
      })
    },
    deleteSubject (ids) {
      this.$confirm('是否要删除该推荐?', '提示', {
        confirmButtonText: '确定',
        cancelButtonText: '取消',
        type: 'warning'
      }).then(() => {
        const params = new URLSearchParams()
        params.append('ids', ids)
        deleteHomeSubject(params).then(response => {
          this.getList()
          this.$message({
            type: 'success',
            message: '删除成功!'
          })
        })
      })
    },
    getDialogList () {
      fetchSubjectList(this.dialogData.listQuery).then(response => {
        this.dialogData.list = response.data.list
        this.dialogData.total = response.data.total
      })
    }
  }
}
</script>
<style></style>
